APA

Masterman J C, . (1972). The double-cross system in the war of 1939 to 1945. New Haven: Yale University Press.

Chicago

Masterman J C, . 1972. The double-cross system in the war of 1939 to 1945. New Haven: Yale University Press.

Harvard

Masterman J C, . (1972). The double-cross system in the war of 1939 to 1945. New Haven: Yale University Press.

MLA

Masterman J C, . The double-cross system in the war of 1939 to 1945. New Haven: Yale University Press. 1972.